Ray, Here are the sims Scott got for the 2-stage project: 'For the full Q to N. WinRoc has apogee at 109,363' but that's using fairly conservative Cd numbers. OpenRocket puts apogee at 111,644', Rick On 10/15/2014 03:54 AM, Ray Rocket (Redacted sender ar0cketman@xxxxxxxxx for DMARC) wrote: > Hello Magnus, > > > I note with interest that you were present at Scott Fintel's "Q" sugar motor > static test firing. I don't find anything on his site about flying the "Q" > motor and he seems to have quit rocketry at that point. Any idea what > happened? I was present at one of his early launches, summer of 2004; his > progress is very inspiring. > > > Ad Astra, > > Ray